Springboot 打jar包时下载分离依赖包到指定目录

1.maven 构建

POM.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <!-- 其他配置省略 -->

    <build>
        <plugins>
　　　　　　<!-- 管理依赖包，可以通过 copy 任务拷贝单个依赖或者 copy-dependencies 任务拷贝全部依赖 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <executions>
                    <execution>
                        <id>copy-dependencies</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>target/lib</outputDirectory>
                            <excludeTransitive>false</excludeTransitive>
                            <stripVersion>false</stripVersion>
                            <includeScope>runtime</includeScope>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
　　　　　　<!-- 打 jar 包用，可以配置包的 MANIFEST -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>**/*.properties</exclude>
                        <exclude>**/*.xml</exclude>
                        <exclude>**/*.yml</exclude>
                        <exclude>static/**</exclude>
                        <exclude>templates/**</exclude>
                    </excludes>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
　　　　　　　　<!-- 重要配置项 layout，否则通过 loader.path 指定外部依赖包时无法加载 -->
                <configuration>
                    <layout>ZIP</layout>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
　　　　　　<!-- 构建工具 ant 的插件，用来执行 ant 任务，此处用以操作文件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-antrun-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>run</goal>
                        </goals>
                        <configuration>
                            <target>
                                <property name="dist">target/distribution</property>
                                <property name="dist-tmp">target/distribution/tmp</property>
                                <property name="app-name">${project.artifactId}-${project.version}</property>
                                <mkdir dir="${dist-tmp}" />
                                <copy file="target/${app-name}.jar" tofile="${dist-tmp}/${app-name}.jar" />
                                <unzip src="${dist-tmp}/${app-name}.jar" dest="${dist-tmp}" />
                                <delete file="${dist-tmp}/${app-name}.jar" />

                                <zip destfile="${dist}/${app-name}-pages.jar">
                                    <zipfileset dir="${dist-tmp}/META-INF" prefix="META-INF" />
                                    <zipfileset dir="target/classes/static" prefix="static" />
                                    <zipfileset dir="target/classes/templates" prefix="templates" />
                                </zip>

                                <move file="target/${app-name}-classes.jar" todir="${dist}" />
                                <move todir="${dist}/3rd-lib">
                                    <fileset dir="target/lib" />
                                </move>

                                <delete dir="${dist-tmp}" />

                                <copy todir="${dist}">
                                    <fileset dir="target/classes">
                                        <include name="**/*.properties" />
                                        <include name="**/*.xml" />
                                        <include name="**/*.yml" />
                                    </fileset>
                                </copy>
                            </target>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

打完包后目录结构

• 3rd-lib
• META-INF
• *.yml
• *.xml
• *.properties
• test-0.0.1-SNAPSHOT-classes.jar
• test-0.0.1-SNAPSHOT-pages.jar

运行jar

java -jar -Dloader.path=.,3rd-lib test-0.0.1-SNAPSHOT-classes.jar 

2.gradle 构建

dependencies {
    implementation 'g:a:v'
}
//copying all dependencies attached to 'compileClasspath' into a specific folder
task downloadDependencies(type: Copy) {
  //referring to the 'compileClasspath' configuration
  from configurations.compileClasspath
  into '3rd-lib'
}